package com.kws.system.service.impl;

import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.stream.Collectors;

import cn.hutool.core.date.DatePattern;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.lang.tree.Tree;
import cn.hutool.core.lang.tree.TreeNodeConfig;
import cn.hutool.core.lang.tree.TreeUtil;
import com.baomidou.mybatisplus.core.toolkit.ObjectUtils;
import com.kws.common.core.domain.R;
import com.kws.common.security.auth.AuthUtil;
import com.kws.system.api.domain.SysDept;
import com.kws.system.api.domain.SysRole;
import com.kws.system.domain.po.MerchantDeptPo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.kws.common.core.constant.UserConstants;
import com.kws.common.core.exception.ServiceException;
import com.kws.common.core.text.Convert;
import com.kws.common.core.utils.SpringUtils;
import com.kws.common.core.utils.StringUtils;
import com.kws.common.datascope.annotation.DataScope;
import com.kws.common.security.utils.SecurityUtils;
import com.kws.system.api.domain.SysUser;
import com.kws.system.domain.vo.TreeSelect;
import com.kws.system.mapper.SysDeptMapper;
import com.kws.system.mapper.SysRoleMapper;
import com.kws.system.service.ISysDeptService;

/**
 * 部门管理 服务实现
 * 
 * @author zhangyh
 */
@Service
public class SysDeptServiceImpl implements ISysDeptService
{
    @Autowired
    private SysDeptMapper deptMapper;

    @Autowired
    private SysRoleMapper roleMapper;

    /**
     * 查询部门管理数据
     * 
     * @param dept 部门信息
     * @return 部门信息集合
     */
    @Override
    @DataScope(deptAlias = "d")
    public List<SysDept> selectDeptList(SysDept dept)
    {
        return deptMapper.selectDeptList(dept);
    }

    /**
     * 查询部门树结构信息
     * 
     * @param dept 部门信息
     * @return 部门树信息集合
     */
    @Override
    public List<TreeSelect> selectDeptTreeList(SysDept dept)
    {
        List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
        return buildDeptTreeSelect(depts);
    }

    /**
     * 构建前端所需要树结构
     * 
     * @param depts 部门列表
     * @return 树结构列表
     */
    @Override
    public List<SysDept> buildDeptTree(List<SysDept> depts)
    {
        List<SysDept> returnList = new ArrayList<SysDept>();
        List<Long> tempList = depts.stream().map(SysDept::getDeptId).collect(Collectors.toList());
        for (SysDept dept : depts)
        {
            // 如果是顶级节点, 遍历该父节点的所有子节点
            if (!tempList.contains(dept.getParentId()))
            {
                recursionFn(depts, dept);
                returnList.add(dept);
            }
        }
        if (returnList.isEmpty())
        {
            returnList = depts;
        }
        return returnList;
    }

    /**
     * 构建前端所需要下拉树结构
     * 
     * @param depts 部门列表
     * @return 下拉树结构列表
     */
    @Override
    public List<TreeSelect> buildDeptTreeSelect(List<SysDept> depts)
    {
        List<SysDept> deptTrees = buildDeptTree(depts);
        return deptTrees.stream().map(TreeSelect::new).collect(Collectors.toList());
    }

    /**
     * 根据角色ID查询部门树信息
     * 
     * @param roleId 角色ID
     * @return 选中部门列表
     */
    @Override
    public List<Long> selectDeptListByRoleId(Long roleId)
    {
        SysRole role = roleMapper.selectRoleById(roleId);
        return deptMapper.selectDeptListByRoleId(roleId, role.isDeptCheckStrictly());
    }

    /**
     * 根据部门ID查询信息
     * 
     * @param deptId 部门ID
     * @return 部门信息
     */
    @Override
    public SysDept selectDeptById(Long deptId)
    {
        return deptMapper.selectDeptById(deptId);
    }

    /**
     * 根据ID查询所有子部门（正常状态）
     * 
     * @param deptId 部门ID
     * @return 子部门数
     */
    @Override
    public int selectNormalChildrenDeptById(Long deptId)
    {
        return deptMapper.selectNormalChildrenDeptById(deptId);
    }

    /**
     * 是否存在子节点
     * 
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public boolean hasChildByDeptId(Long deptId)
    {
        int result = deptMapper.hasChildByDeptId(deptId);
        return result > 0;
    }

    /**
     * 查询部门是否存在用户
     * 
     * @param deptId 部门ID
     * @return 结果 true 存在 false 不存在
     */
    @Override
    public boolean checkDeptExistUser(Long deptId)
    {
        int result = deptMapper.checkDeptExistUser(deptId);
        return result > 0;
    }

    /**
     * 校验部门名称是否唯一
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public boolean checkDeptNameUnique(SysDept dept)
    {
        Long deptId = StringUtils.isNull(dept.getDeptId()) ? -1L : dept.getDeptId();
        SysDept info = deptMapper.checkDeptNameUnique(dept.getDeptName(), dept.getParentId());
        if (StringUtils.isNotNull(info) && info.getDeptId().longValue() != deptId.longValue())
        {
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }

    /**
     * 校验部门是否有数据权限
     * 
     * @param deptId 部门id
     */
    @Override
    public void checkDeptDataScope(Long deptId)
    {
        if (!SysUser.isAdmin(SecurityUtils.getUserId()) && StringUtils.isNotNull(deptId))
        {
            SysDept dept = new SysDept();
            dept.setDeptId(deptId);
            List<SysDept> depts = SpringUtils.getAopProxy(this).selectDeptList(dept);
            if (StringUtils.isEmpty(depts))
            {
                throw new ServiceException("没有权限访问部门数据！");
            }
        }
    }

    /**
     * 新增保存部门信息
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int insertDept(SysDept dept)
    {
        SysDept info = deptMapper.selectDeptById(dept.getParentId());
        // 如果父节点不为正常状态,则不允许新增子节点
        if (!UserConstants.DEPT_NORMAL.equals(info.getStatus()))
        {
            throw new ServiceException("部门停用，不允许新增");
        }
        dept.setAncestors(info.getAncestors() + "," + dept.getParentId());
        dept.setDeptType("0");
        return deptMapper.insertDept(dept);
    }

    /**
     * 修改保存部门信息
     * 
     * @param dept 部门信息
     * @return 结果
     */
    @Override
    public int updateDept(SysDept dept)
    {
        SysDept newParentDept = deptMapper.selectDeptById(dept.getParentId());
        SysDept oldDept = deptMapper.selectDeptById(dept.getDeptId());
        if (StringUtils.isNotNull(newParentDept) && StringUtils.isNotNull(oldDept))
        {
            String newAncestors = newParentDept.getAncestors() + "," + newParentDept.getDeptId();
            String oldAncestors = oldDept.getAncestors();
            dept.setAncestors(newAncestors);
            updateDeptChildren(dept.getDeptId(), newAncestors, oldAncestors);
        }
        dept.setDeptType("0");
        int result = deptMapper.updateDept(dept);
        if (UserConstants.DEPT_NORMAL.equals(dept.getStatus()) && StringUtils.isNotEmpty(dept.getAncestors())
                && !StringUtils.equals("0", dept.getAncestors()))
        {
            // 如果该部门是启用状态，则启用该部门的所有上级部门
            updateParentDeptStatusNormal(dept);
        }
        return result;
    }

    /**
     * 修改该部门的父级部门状态
     * 
     * @param dept 当前部门
     */
    private void updateParentDeptStatusNormal(SysDept dept)
    {
        String ancestors = dept.getAncestors();
        Long[] deptIds = Convert.toLongArray(ancestors);
        deptMapper.updateDeptStatusNormal(deptIds);
    }

    /**
     * 修改子元素关系
     * 
     * @param deptId 被修改的部门ID
     * @param newAncestors 新的父ID集合
     * @param oldAncestors 旧的父ID集合
     */
    public void updateDeptChildren(Long deptId, String newAncestors, String oldAncestors)
    {
        List<SysDept> children = deptMapper.selectChildrenDeptById(deptId);
        for (SysDept child : children)
        {
            child.setAncestors(child.getAncestors().replaceFirst(oldAncestors, newAncestors));
        }
        if (children.size() > 0)
        {
            deptMapper.updateDeptChildren(children);
        }
    }

    /**
     * 删除部门管理信息
     * 
     * @param deptId 部门ID
     * @return 结果
     */
    @Override
    public int deleteDeptById(Long deptId)
    {
        return deptMapper.deleteDeptById(deptId);
    }

    @Override
    public List<Tree<String>> queryDeptTree(String deptName) {
        List<SysDept> deptList = deptMapper.queryDeptAll(deptName);
        // 配置构建信息
        TreeNodeConfig treeNodeConfig = new TreeNodeConfig();
        // 权限ID字段
        treeNodeConfig.setIdKey("id");
        // 权限父ID字段
        treeNodeConfig.setParentIdKey("parentId");
        // 权限子集字段
        //treeNodeConfig.setChildrenKey("children");
        // 权限名称字段
        treeNodeConfig.setNameKey("companyName");
        //构建树
        List<Tree<String>> treeNodes = TreeUtil.build(deptList, "0", treeNodeConfig, (treeNode, tree) -> {
            tree.setId(String.valueOf(treeNode.getDeptId()));
            tree.setParentId(String.valueOf(treeNode.getParentId()));
            // 设置权限名称
            tree.setName(treeNode.getDeptName());
            // 设置排序字段
            tree.setWeight(treeNode.getOrderNum());
            // 设置自定义属性
            tree.putExtra("deptDescription", treeNode.getDeptDescription());
            tree.putExtra("createTime", DateUtil.format(treeNode.getCreateTime(), DatePattern.NORM_DATETIME_FORMATTER));
        });
        return treeNodes;
    }

    /**
     * 查询商家列表
     * @return
     */
    @Override
    public List<SysDept> selectDeptListByMerchantId() {
        SysUser sysUser = AuthUtil.getLoginUser().getSysUser();
        Long companyId = sysUser.getCompanyId();
        return deptMapper.selectMerchantDeptList(companyId);
    }

    /**
     * 商家端--新增部门信息
     * @return
     */
    @Override
    public Object addMerchantDept(MerchantDeptPo merchantDeptPo) {
        Long parentId = merchantDeptPo.getParentId();
        String deptName = merchantDeptPo.getDeptName();
        SysUser sysUser = AuthUtil.getLoginUser().getSysUser();
        Long companyId = sysUser.getCompanyId();
        //查询是否存在商家一级列表，没有则自动新增
        SysDept oneSysDept=deptMapper.selectDeptByMerchant(companyId);
        if (ObjectUtils.isEmpty(oneSysDept)){
            //自动新增商家一级列表
            oneSysDept=new SysDept();
            oneSysDept.setParentId(100l);
            oneSysDept.setAncestors("0,100");
            oneSysDept.setDeptName(sysUser.getUserName());
            oneSysDept.setOrderNum(0);
            oneSysDept.setDeptType("1");
            deptMapper.insertDept(oneSysDept);
        }
        SysDept sysDept = new SysDept();
        if (parentId==null||parentId==0){
            parentId=oneSysDept.getDeptId();
        }
        //查询选择的组织id
        SysDept oneSysDept1=deptMapper.selectDeptById(parentId);
        sysDept.setParentId(parentId);
        sysDept.setDeptName(deptName);
        sysDept.setAncestors(oneSysDept1.getAncestors()+oneSysDept1.getDeptId());
        sysDept.setStatus("0");
        sysDept.setCreateBy(String.valueOf(SecurityUtils.getCompanyId()));
        sysDept.setCreateTime(new Date());
        sysDept.setUpdateBy(String.valueOf(SecurityUtils.getCompanyId()));
        sysDept.setUpdateTime(new Date());
        sysDept.setDeptType("1");
        return deptMapper.insertDept(sysDept);
    }

    @Override
    public SysDept selectDeptByMerchant(Long companyId) {
        return deptMapper.selectDeptByMerchant(companyId);
    }

    @Override
    public List<SysDept> listByDeptId(Long deptId) {
        return deptMapper.listByDeptId(deptId);
    }

    /**
     * 递归列表
     */
    private void recursionFn(List<SysDept> list, SysDept t)
    {
        // 得到子节点列表
        List<SysDept> childList = getChildList(list, t);
        t.setChildren(childList);
        for (SysDept tChild : childList)
        {
            if (hasChild(list, tChild))
            {
                recursionFn(list, tChild);
            }
        }
    }

    /**
     * 得到子节点列表
     */
    private List<SysDept> getChildList(List<SysDept> list, SysDept t)
    {
        List<SysDept> tlist = new ArrayList<SysDept>();
        Iterator<SysDept> it = list.iterator();
        while (it.hasNext())
        {
            SysDept n = (SysDept) it.next();
            if (StringUtils.isNotNull(n.getParentId()) && n.getParentId().longValue() == t.getDeptId().longValue())
            {
                tlist.add(n);
            }
        }
        return tlist;
    }

    /**
     * 判断是否有子节点
     */
    private boolean hasChild(List<SysDept> list, SysDept t)
    {
        return getChildList(list, t).size() > 0 ? true : false;
    }
}
